Where do you live?? If you can find a good framebuilder within an hour of your place, go there first.

If no framebuilders nearby, research and find a good one. Bilenky you mentioned is good, also look at IF and Kellogg/spectrum. There are lots of others. Serotta should be on the list too.

But you will do best by getting fitted by the builder in person.

Trust me on this.